水资源短缺:污染威胁中国经济增长

2. volume n. (生产,交易等的)量;额
例句：The volume of business with Japan has increased.
与日本的贸易额增加了。

3. cap vt.覆盖, 笼罩；胜过, 超过
例句：Each clown capped the last joke of the other.
丑角的笑话一个比一个好。

4. consumption n. 消耗量;消费量
例句：There's too great a consumption of alcohol in Britain.
在英国酒的消耗量太大了。

5. surpass vt.超过; 优于; 多于; 非…所能办到
例句：The results surpassed all our expectations.
结果比我们期望的都好。

6. suspend vt.暂停, 终止
例句：Both sides in the conflict have agreed temporarily to suspend hostilities.
冲突双方同意暂时停火。

7. compulsory adj. 必须做的，强制的，强迫的
例句：Attendance at the meeting is compulsory.
会议是必须参加的。

8. exceed vt.超过; 超越
例句：The driver exceeds the speed limit.
那位司机超速驾车。

9. shortage n. 缺少,不足,匮乏
例句：There is a shortage of salt in this country.
这个国家缺少盐。

10. lack vt.缺乏; 缺少
例句：They met with many difficulties, for they lacked equipment, experience and technical data.
因为缺少设备, 缺乏经验和技术资料, 他们遇到不少困难。